Answer: A
Explanation: The blood–air barrier (alveolar–capillary barrier or membrane) exists in the gas exchanging region of the lungs. It exists to prevent air bubbles from forming in the blood, and from blood entering the alveoli. ... The barrier is permeable to molecular oxygen, carbon dioxide, carbon monoxide and many other gases.
Answer: Quantitative
Explanation:
Quantitative method can be defined as method which can be used in the social science, natural science. In this method systematic models , graphs and charts are used to demonstrate the experiment.
Here, the experiment is done to prove that the population having pets have healthier lifestyles as compared to the population having no pets.
So, here quantitative method is used for this experiment.
Answer:Which action would effectively support Title VI of the Civil Rights Act? Using a professional medical interpreter while providing medical care to an LEP patient. Which cultural groups have the highest incidence of lactose intolerance
Explanation:please give brainliest
